﻿using System;
using System.Windows.Input;

namespace InkjetControl.model
{
    internal class AnotherCommandImplementation : ICommand
    {
        private readonly Action<object> _execute;
        private readonly Func<object, bool> _canExecute;
        public AnotherCommandImplementation(Action<object> execute)
            : this(execute, null)
        { }

        public AnotherCommandImplementation(Action<object> execute, Func<object, bool> canExecute)
        {
            if (execute is null)
            {
                throw new ArgumentNullException(nameof(execute));
            }

            _execute = execute;
            _canExecute = canExecute ?? (x => true);
        }

        public bool CanExecute(object parameter) => _canExecute(parameter);

        public void Execute(object parameter) => _execute(parameter);

        public event EventHandler CanExecuteChanged
        {
            add
            {
                CommandManager.RequerySuggested += value;
            }
            remove
            {
                CommandManager.RequerySuggested -= value;
            }
        }

        public void Refresh() => CommandManager.InvalidateRequerySuggested();
    }
}